What does it cost to build a wind turbine? Capital costs for wind projects are $1,500 - $2,000 per kilowatt of nameplate capacity. How does the cost of wind energy compare to other energy sources? Wind-generated electricity has become more economical to produce in the past 10 years, dropping from as much as 30 cents per kilowatt-hour to 4.5 to 7.5 cents, making it more competitive with other energy sources. The cost to develop and build a wind energy facility is approximately $1.3 million to $1.7 million per megawatt, compared to a cost for gas-fired energy generation of $800,000 per megawatt.